Did you know that breast milk contains substances similar to cannabis? Or that it's sold on the Internet for 262 times the price of oil? Feted and fetishized, the breast is an evolutionary masterpiece. But in the modern world, the breast is changing. Breasts are getting bigger, arriving earlier, and attracting newfangled chemicals. Increasingly, the odds are stacked against us in the struggle with breast cancer, even among men.

In this informative and highly entertaining account, intrepid science reporter Florence Williams sets out to uncover the latest scientific findings from the fields of anthropology, biology, and medicine. The result is a fascinating exploration of where breasts came from, where they have ended up, and what we can do to save them.

"'Illuminating, surprising, clever, and important." -Mary Roach"A wonderful history of an astonishingly complex part of the human body." -Carl Zimmer